1213220323193 has 2 divisors, whose sum is σ = 1213220323194. Its totient is φ = 1213220323192.

The previous prime is 1213220323163. The next prime is 1213220323201. The reversal of 1213220323193 is 3913230223121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1199697424249 + 13522898944 = 1095307^2 + 116288^2 .

It is an emirp because it is prime and its reverse (3913230223121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213220323193 - 2¹² = 1213220319097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213220323163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606610161596 + 606610161597.

It is an arithmetic number, because the mean of its divisors is an integer number (606610161597).

Almost surely, 2^{1213220323193} is an apocalyptic number.

It is an amenable number.

1213220323193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213220323193 is an equidigital number, since it uses as much as digits as its factorization.

1213220323193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 1213220323193 in words is "one trillion, two hundred thirteen billion, two hundred twenty million, three hundred twenty-three thousand, one hundred ninety-three".